A map of the Hathaway Fire as of Tuesday, June 11, 2013.
A wildfire burning near a Southern California Indian reservation continues to grow as it plows through a forest.
The 3-square-mile Hathaway Fire in the San Bernardino National Forest is 25 percent contained Tuesday. It gained a few hundred acres of ground overnight.
The fire erupted Sunday on the Morongo Indian Reservation about 85 miles east of Los Angeles. It's burning in the San Gorgonio Wilderness and is far from any homes.
U.S. Forest Service spokesman Lee Beyer says the fire is moving slowly through century-old chaparral and dead trees in high, steep, rugged terrain.
About 1,000 firefighters aided by 19 aircraft are fighting the fire. Three firefighters have suffered minor injuries.
The cause of the fire is under investigation.